Chadha, Gurmeet K. ; Passi, I. B. S. (1994) Idempotents in matrix group rings Journal of Pure and Applied Algebra, 94 (3). pp. 283-284. ISSN 0022-4049
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0022-4049(94)90010-8
Abstract
It is proved that if E is an idempotent matrix with entries in the group algebra KG of a group G of finite cohomological dimension over a field K of characteristic zero, then the partial augmentations of the trace of E corresponding to the elements of infinite order are all zero, provided G contains a free Abelian subgroup of rank cdKG - 1 in its centre.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 56774 |
| Deposited On: | 25 Aug 2011 10:03 |
| Last Modified: | 25 Aug 2011 10:03 |
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